Air-relief device



AL BUSS AIR RELIEF DEVICE March 4, 1930.

Filed Feb. 18, 1928 J a i mf Jwww INVENTOR. fgms' 3116s.

Patented Marv.;4, 1930l ,y

UNITED I STATES AUGUST BUSS, OF DETROIT, MICHIGAN AIR-RELIEF-DEVIGE Application led .February 18, 1928. Serial No. 255,304.

My invention relates to a new and useful improvement in an air relief 4device adapted for use particularly on heating systems of the steam or hot water type, although from a 6 description of the invention it will appear evident that the invention may be putA to other uses.

' It is an object of the present 1nvent1on to provide a device of this class in which relief l or Vent may be given to the system .w1th which used to 'permit the escape of air or other iuids froma container, and at the same time, prevent the escape of liquidv therefrom.

It is another object of the invention to provide an air relief or vent having, intermediate its control and the outlet orice, an absorbent material for absorbing liquids delivered thereto and permitting the passage of gases therethroug Another object of the invention is the provision in an air relief vent of an absorbent member and a retainer therefor.

Another object of the invention is the provision of an air relief vent having a control mechanism and supporting means therefor adapted for mounting in various types of fittin s or pipes. l

ther obJects will appear herelnaftr.

The invention consists in the combination andv arrangement of parts hereinafter described and claimed.

The invention will be best understood by a reference to the accompanying drawings which form a part of this specification and in which, Y

Fig. 1 is acentral vertical sectional 'view of the invention showing it adapted for use as an air vent on a radiator.

Fig. 2'is a sectional view taken on line 2-2 of Fig. 1.

Fig. 3 is a central vertical sectional viewV of the invention with the adapter attached thereto for mounting in seatless bearing fittings.

Fig. 4 is a central vertical sectional v'iew of the invention adapted for use on a radiator in slightly modified form from that shown in Fig. 5 is anend elevational view of the 50 form shown in Fig. 4.

In the form shown inl Fig. 1 I have illustrated t-he invention used with a structure comprising a shell 8 interiorly threaded and communicating through the passage 9 with the laterally extendin nipple 10 and the ex- 55 tension 11, a cap 12 being threaded on the extension 11 to serve as 'a closure. Threaded into the'shell 8 is a cup-shaped member 13 having an opening 14 formed centrally therein. Loosely positioned in the shell 8 so 60 as to cover the end -of the passage 9 and close communication between its passage and the opening 14 is a disc 15 which may be made from metal or other suitable material. Threaded on the cup-shaped member 13 isa lock nut 16. Positioned in the cup-shaped member is a quantity of absorbent material 17, such as felt, loose wool, or the like. A cap 18 is threaded on the cup-shaped member as aclosure and provided with a central opening 19.

In use the device shown inFig. 1 may be attached as an air relief or vent to a radiator used with a one-pipe or a two-pipe system of l heating. 75

In use the nipple 10 is threaded into the radiator so as to communicate with the interior thereof. With the one-pipe system a cap 12 serves as a closure for the extension 11. The air forced from the radiator by the incoming steam will serve to raise the disc from its seat so that communication is indirectly established between the passage 9 and ,the opening 14, thusy permitting the air access to the inside of the cup-shaped member 13. The absorbent material 17 placed therein is such as to permit a ready passage of the air or other gas therethrough so that the proper venting may be effected. The presence of the material 17 however, will prevent the escape of water or any other li u1d from th'e device, thus avoiding the iliiculties which are commonly encountered in many widely used types of radiator valves or vents.

en desired to use the structure shown in Fig. 1 with a. two-pipe s stem of heating the cap 12 is dis ensed wit and the extension 11 connecte to the return pipe.

The form shown in Fi 4 -is particularly adapted for use as an el ow in connection the return end of the radiator, will permittlie dispensing of S p used in the s stem adJacent the boiler. The structure an operation of this deviceji's'much similar to the structure and operation a1- ready described. Thb nipple20 wiild' be at#- tached to the radiator and-connected 'by the coupling 21 to the nipple 22. The` passageway 23 would then have communication through the opening 24 to the opening 14the rest of the structure being as previously described. f

In Fig. 3 I have shown the invention used with a fitting 25 in which there is no seat or abutment u on which the disc 15 may engage. To utilize t e rinvention with such a fitting itis necessary to use a cup-shaped adapter 26 having an opening 27 Yformed centrally in its base which communicates with the interior of the fitting 25 with which used. Threaded into the cup-shaped member 26 is thecup- J shaped member 13 with all of the component parts already described. The form shown in Fig. 3 is thus adapted for use with fittings of various kinds, it being butnecessary to provide the member 26 as an adapter to fit the fitting, such as a T, an L or the like, jwith whichit is intended to use the device, thus making the invention universally ada ted as a drip vent in various systems andwit various types of fittings.

The forms shown may alsobe used'as circulating drip vents inthe circulating pipes of a heating system, it being but necessary to form the member 11 shown in FiO. 1 as a nipple projecting laterally outwar 'y iii alignment with the nipple 10.

If desired, (a felt washer 2Z`may be positioned upon the upper end of the cup-shaped member 13 loosely so as to further protect against the escape of liquid through the openin 19.

i Vhile I have illustrated and described the preferred form of my invention, I do not wish to limit myself to the precise details of structure shown, but desire to availy myself of such variations and modifications as come within the scope of the appended claims. v

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. An air relief vent of the class described, comprising an interiorly threaded member provided with an opening communicating with the system to be vented; a cup-shaped retaining member threaded into said member and providedwith an opening in its base, said base being inwardly of said threaded member; a movable closure positioned between the opening in said base and the opening in said interiorly threaded member for opening and closing communication of said the. venty which is commonly ,749,199 j f t openingjwith said system; and absorbent material contained in said retainer.

' 2. An air relief vent of the class described, comprising: an interiorly threaded member communicating with the system to be vented;

a retaining member threaded into said member and communicating with an o ening 'formed therein with the interior of sai member; a movable closure for opening and closing communication ofsaid retainer with said first mentioned member, movable in response to. pressure in saidsystem; absorbent material mounted in said retainer in the path of Athe gases passing therefrom, to the atmosphere; and a cap mounted on said retainer and provided with 'an opening therein for establishing communication between said retainer and the atmosphere.

3. An air relief vent of the class described, comprising: an interiorly threaded member communicating with the system to be vented; a retaining member threaded into said member andv communicating with an opening formed therein with the interior of said member; a movable closure for opening and closing communication of said retainer with said first mentioned member, movable in response to pressure in said system; absorbent material mounted in said retainer in the path of the gases passing therefrom, to the atmosphere; a cap mounted on said retainer and provided with an opening therein'for establishin communication between said retainer and t e atmosphere; and a movable closure for the upper end of said retainer positioned in said cap and movable for establishing communication between said retaineraand the atmosphere.

4. An air relief vent of the class described and provided with an o ening therein for es tablishing communication between said retainer and said atmosphere; and a movable closure for the open end of said retaining member and ,loosely positioned between said open end and the opening in said cap.

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In testimony whereof I have signed the-- foregoing` specification.

AUGUST BUSS. 

